Headphone



FIG. 1 is a perspective view of a headphone,

FIG. 2 is a front elevational view thereof,

FIG. 3 is a rear elevational view thereof,

FIG. 4 is a top plan view thereof,

FIG. 5 is a bottom plan view thereof,

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

In the drawing the claimed design is defined by the shaded surfaces, the broken lines depict unclaimed environment that forms no part of the claimed design. 

CLAIM The ornamental design for headphone, as shown and described. 